Sony DSC-T2 camera shake

Hi!I have a Sony DSC-T2 digital camera that's just gone out of warranty (31st May) - typical!? The camera has started vibrating sometimes when turned on and the photos come out fuzzy. When opening the camera (by pulling the front part down) it starts to vibrate quite noisily. Sometimes it settles down after a second or two and works as normal. Other times it continues to vibrate and the view is shaky and photos come out shaky too. If I close the front part when it's whirring then it often continues to vibrate for around 10secs afterwards. Have you got any idea what could be causing this?Thanks,Alex